LOS ANGELES -- West Coast trips have been the bane of the Reds' existence for years. Visits to Dodger Stadium, especially lately, have faded momentum faster than a reality-TV star's moment of fame.

Sure enough, Chavez Ravine got the better of the Reds again on Monday. Their season-high six-game winning streak was wiped out by a sloppily played, 6-5 loss to the Dodgers.

"We'll start a new streak tomorrow. This one hurts, big time," Reds manager Dusty Baker said. "You certainly wanted to start this road trip off well. But we'll have to end it well."

Among the Cincinnati gaffes were two fielding errors, each resulting in costly runs. That included the winning run for Los Angeles against reliever David Weathers (1-3). Russell Martin led off the ninth with a grounder to shortstop. Rookie Paul Janish made the tough pickup to his left but skied his throw to first base into the Reds dugout. It was ruled a single and an error that advanced the runner to second base.

"I did the hard part and made the play," Janish said. "The throw just sailed on me. That's all there was to it. It's just one of those things. I probably make that play eight, nine times out of 10. It was an inopportune time for that to happen."

Martin went to third base on Jeff Kent's grounder. Following back-to-back intentional walks to load the bases, rookie Blake DeWitt lined a single to left for the walk-off finish.

Since 2006, the Reds are 9-20 in West Coast games and 0-7 at Dodger Stadium. The last Reds win at Los Angeles was on July 28, 2005.

There were plenty of chances for that streak of futility to end on Monday. Adam Dunn's team-record-tying homer in five straight games, a two-run shot to right field, gave starter Bronson Arroyo a 4-0 lead, but the Reds couldn't hold it.

Two out walks and hits marred Arroyo's outing. In the third inning, Juan Pierre drew a two-out walk and Andre Ethier hit a double to right field. Martin grounded to starting shortstop Jerry Hairston Jr., who was adjusting the ball in his hand as his throw to first went into the dugout and permitted both runners to score.

With two outs in the fifth, Arroyo allowed four straight singles. James Loney started the streak with an RBI single to center field. The hits continued until DeWitt tied the game at 5 with an RBI hit to left field.

"That's what happens," Baker said. "When you get two-out hits, you win. They did a good piece of hitting over there."

"That one inning, I had my opportunities," said Arroyo, who allowed five runs (two earned) on nine hits with three walks and three strikeouts over five innings. "I felt like the game was pretty manageable. I should have been able to get through that fifth inning and get us into the sixth, at least, to give us a chance to keep the lead with the bullpen coming in."

The Reds had their share of shortcomings offensively, too. In the fourth, Arroyo was thrown out trying to advance from second to third on a flyout to center fielder Matt Kemp, who made a perfect strike. In the fifth, Ken Griffey Jr. hit a single to Kemp as he fell down, but Kemp was able to recover and throw Griffey out at second.

In the fifth, after Dunn's lined RBI single to right field made it a 5-2 game, Cincinnati notched just one more hit over its final four innings: Brandon Phillips' single with two outs in the seventh, his fourth hit of the game.

"I think we had an opportunity to kind of nail them down," Dunn said. "We just made some mistakes. The good thing is the mistakes we made weren't lackadaisical. They were hard, tough plays. They just didn't go our way."